Power head



P. A. MYERS.

POWER HEAD.

APPLICATION man Aus.ao,19zo.

A379939 Patented Dec. 5, 1922.

2 SHEETS-SHEET l.

ATTORNEY P. A. MYERS.

Patent@ Dee. 5,1922.

2 SHEETS-SHEEI 2.

l INVENTOR Pfl/1. /P A. VfR s,

ad Vl E N Dn O T T. A

Patented, D?. 5, 1922..

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. Beit knownthat I PHILIP A. MYERS, ,a citizen of the United states, residing stash-- land, in the county of Ashland and State of .Ohio, have invented certain new 'and useful' A.jlmprovelnents"in Power Heads,l .of which :the following vis a'specification,"reference being :had thereinjto the yaccompanying drawhis",inventionhrelates te 'an improved power'head for use in operating pumps, usu-` ally domestic pumps which stand in a ver- -ticalfposition. Y'

. plihispower head consists, essentially, astol 1li thefimprovements to be now set forth, of a ."casingadaptedto contain a lubricant,with a removable cover for the insertion and withvdrawal of thevinterior mechanism and an.- other opening through whichfone of the 1n- `terior operating parts may extendfto be con-` nected withV a ump or other machineQthe power head `virili)V operate; of-,driving pimons and driven gearspreinovably mounted in the. casing, the gears being spaced apart and havinga wrist pin sothaty a pitman may be, placed between the gearsand on the pm and a lsliding member-operated by the Pitman Y and itseladaptedto actuate outside mechaf nism, as a' pump. j 1

v In the accompanying drawings- "Figlflisgafg vertical, sectional view of'myA 4rpimprovedpfwv'er head,

i" Fi -2 is a ''tran'sverse,'l sectional -viewv on v -theimeys-y ofrig. 1; and @sty p casing,v thel remoyable, platev and the stud rig. s is a sectional 'view @fa parttime Lshaft, the section'being taken on the'line In the drawings, the numeral 1 ydesignates 40 I the casing of-the power head comprising a box-like structure,usually made of castiron,

with, an openin in which is seated a removable'cover 2. his opening is of dimensions ladapting it" 'to' perm1t-of the insertion and' v l D l l Vassembling thezp'arts or dputtmg 1n repairs.

removal of the interior mechanism, as when The casing is alsov slotte as shown at 3, to

v'permit ofthe passage' therethrou h of 'one ,of theope'ra'ting members, aswill ater more fully appear.-

. IAS moreparticularly shown in Fig. 2, the 'y casing is equippei'l at each side with a re movable bearing 4 held by bolts 5. In such screws 12.

vplatesthe stud" shafts can be easily with- .drawn should occasion require, while .they Varealso easily assembled. .Andinthe case this pin at one end and occupyinsa bearings mounted a drivilllg'Shef-td -l rying outside of 'the'.casi'n'g 'fast and-loose.

formed on removableplates11,'also held by y means oflthese' .removable ofthe 'bearing itsfdiameter is such that vbeltpulleys 7 and within it twopinions ,8.1 These pinions each mesh with agear wheel 9 'there `being two such gears. Each gear whee is mounted on a studyshaft `10 carried Vby or` .i'vlfi'en'"itisv removed ythe 'hole in lthe casing is large enough tov permit 'the pinions to lbe removed from the-'casing by withdrawing the shaft', In the-'case voa-,the plates 11,

factory, as well asin-the course of use'.y

These .devices and their arrangement con- Y 4stitute the subject -i'iiatt'erof a divisional application, divided loutovthis case, Ser. No. 598,899, filed Nov..y3"1922. "But I retain 'in the present speciicationythe foregoing 'description inorder 'to'` make 'complete the entirefpower head, as shown in the drawings.y ,QExtending from one to lthe other of the gear wheels 9 is a wrist pinv 13 whose function is to operate a pitman 14, mounted on position between the two'gear wheels. the gear 'wheels larefsupported on stud shafts, whichterminate'near theinner faces of the wheels, thereis no obstruction to the movements of thepitnan. Its upper end is, attached by a bearing bolt' 15vto a reciprocatingsleeve or` y.

member lmounted onl a guide rod 17 secured at its upper` and lowerends to and within the ca'sin The sleeve has an arm 18 .which projects t rough the slot-,#3 of the casing and extends outa suitable distance for attachment 'to `any mechanism whichl the sleeveiis tev operate, vas the piston rod 19 of a ump. l l. t will be'noted too that the pitman swings at its'lowerv .end so close to the sleeve that during a art of thetinie itis nearly in the vertical. his occurs on the upstroke ofthe pitman, so that it is in this substantially vertical position when lifting the` load through the greater part of the stroke-an advantage in that it prevents the side thrust of the sleeve against the guidingcshaft l? and thus reduces friction and conserves power.

The tvvo features of the connection of the pump head or cap 20 with the casing of an oil sump Q1 are embodied in my copendng application, Ser. No. 351,966, filed Jany. 16th, 1920, and from which application the present subject matter has been divided out as constituting a separate invention.

Having thus fully described my invention, what I .claim as new and desire to secure by Letters Patent, is

1. In a. power head, the combination, of a gear casing comprising an oil chamber and having a plurality of suitable bearings therein, gears mounted in opposite plates, a Wrist pin interconnecting said gears intermediate their axial center and periphery, means to actuate said gears, a guideV shaft mounted in said casing, a sleeve operable on said guide shaft, and a pitman connecting the sleeve to said gears.

2. jIn a power head, the combination, of a gear casing comprising an oil chamber and having a plurality of removable plates carrying stud shafts, said plates and shafts being adapted to be removed outwardly therefrom, a gear mounted on each of said shafts, a Wrist pin interconnecting said gears intermediate their axial center and periphery, slip bearings also iitted to the casing, and a shaft supported in said slip bearings and having pinions which mesh with said gears, all of said mechanism being adapted to receive lubrication`from any lubricant contained in said casing. Y

3. In a power head, the combination, of a gear casing adapted to contain a quantity of Mareas lubricant and having an opening for the insertion of the interior mechanism andl another opening for the projection of an operating part, With a driving shaft carrying pinions Within the casing, driven gears mounted in the casing and spaced apart with a 'Wrist pin connecting them, a pitman mounted on the Wrist pin, a guide, and a sleeve mounted thereon, the sleeve being oonnected with the pitman and having an extension projecting exteriorly through the casing.

4. In a power head, thecombination, of a gea-r casing having a plurality of opposite bearings therein, a gear mounted in each of said bearings, a Wrist pin connecting saidv gears intermediate their axial center and eriphery, means to actuate said gears, a guide shaft mounted in said casing, a sleeve operable on said guide Shaft and having an arm extending through said casing and adapted to be operably connected externally thereof, and a pitman connecting the sleeve to said gears.

5. In a power head, the combination of a ,gear casing comprising an oil chamber, and having a plurality of opposite bearings therein, agear mounted in each bearing, a Wrist pinv interconnecting said gears intermediate their axial center and periphery, means to actuate said gears comprlsing a shaft and pinions, a guide in said casing, an operable member mounted on the guide and having an arm extending beyond said casing and adapted to be operably connected externally of the casing, and a pitman connecting said Wrist pin and said operable member.

In testimony whereof, I affix my signature.

PHILIP A. MYERS. 

